schlacks



w. J; scHLAcKs-, FORCE FEED LUBRICATOR. APPLICATION FIIED JULY 1 0 15H8.1,307,988. Patenxgahm@ 24, 1919.

ww, 4// @Aww 4M) The two dia-phragms, by an axial strut or UNITEDsrntriigswrlnrnivr ornion.

WILLIAM J'. SCHLACKS, 0F CHICAGO, ILLINOIS, ASSIGNOR T0 MCCORD ANDCOMPANY,

OF CHICAGO, ILLINOIS, A CORPORATION rOIE DELAWARE.

FORCE-FEED LUBRICATOB- To all `whom t may Concern:

-ful Improvements in Force-F eed tors; and Il dohereby declare thefollowing the improved lubricator on Be .it known that I, VViLLIAM J.SCHLACKS, a citizen of the United States, residing at Chicago, in thecounty of Cook and State ofl Illinois, have invented certain new andvuseubr1cato be a. full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My` invention relates to force feed lubricators of the diaphragmdisplace-ment type, and while especially designed for use in locomotivelubricator service, is, nevertheless, adapted for various otherlulbricator purposes. The invention resides in an im proved arrangementof diaphragme and immediately associated cooperating parts wherebydecided improvements are olbtained from a manufacturing point of view,from the point 'of durability and from the point ofeiiiciency inoperation. Generally stated, the invention consists of the novel devicesand combinations of devices herein.,

after described' and defined in the claims. y

In the lubricator illustrated vin the accompanying drawings, the pumpingaction is produced by slight vibrations or reciprocations of adifferential diaphragm structure, which structure comprises twodiaphragms having exposed areas ofdiii'erent extent. The large diaphragmis subject to pressure Ipulsations produced, for instance, Aby thevarying pressure in one end of an engine cylinder, and the smallerdiaphragm acts as an oil displacing element, and, in the customaryapplication for lubricating an engine cylinder, would be subject tosteam passage pressure.

t-i'e post, are caused to partake of common vibratory movements. Otherimportant fea` tures, such for example, as the arrangement whereby thehot live steam which acts upon the large diaphragm, is prevented fromoverheat-ing the oil in the lubricator reservoir, are provided. y ln thedrawings, like characters indicate like parts throughout the severalviews. Referring to the drawings:

Figure 1 is a vertical section taken through the line 1-1 of Fig. 3; v

`Specification of Letters Patent.

referred for-m of the improved Fig. 2 is a vertical sect-ion taken'through .the lubricator on the line 2-2 of Fig. 3;

F ig. 3 is a horizontal section taken on the line 3-3 of Fig. l; and

Fig. 'l is a fragmentary detail in vertical section on the line 4-4 ofFig. 3.

The oil reservoir is preferably made up of a heavy glass cylinder fl, aibase 5 anda cap 6, the said base and cap being connected by a suitablenut-equipped rod which, as is usual, seats the ends of the cylinder etagainst suitable gaskets -or packings 8 set into the said members 5 and6. The base 5 has an externally threaded lower Vportion 9 of reduceddiameter, and onto which is screwed a't/wcrpart member or casting 10- 11that affords thel diaphragm housing. This housing, by means ofnut-equipped studs-12, or any other suitalble devices, is adapted to bcanchored to any suitable part fof a locomotive or other engine. The sec-Patented J une 211, 1919.. l Application filed July 20, 1918. Serial No.245,948.

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the diaphragm 14, except that it lis oit less diametef.i and has lessexposed area. lt is clamped between a shoulder on the member 10 and awasher 17 set into the base member 5, and there is, of course, afluid-tight joint between the said members 5, 10 and l?.

`The twoy'diafphragms 14 and 16 are aniallyw connected by a strut orpost 18 which has upper and lower end threaded studs 19 and 20 that are"passed, respectively, through axial pertorations in the diaphragme 16and 14. `Nuts 19aand '20a on the studs 19 and 20, respectively, clampthe respective diaphragmsl and 14 tightly against the ends of the strut18. A suitable spring normally holds the lower end of 'the threaded stud20 against an'axial hub 11b of the memfber 11. This spring may takevarious forms, but preferably, `as shown, is in the form of a springcross bar 21. The central p'or-..

shoulder 18 of the strut18 and has allarga w passage through thiolthereduced` portion of 4the stru-t is passes. The ends of said spring ,areclamped between thespacing washer and an undercut shoulder of the member10. Obviously, this spring bar yieldingly presses the strut and hence,the axial portions of the two diaphragms downward as far as permitted byengagement of the stud with the hub 11".

It will 'be noted that there is considerable space between the twodiaphragme which affords an air chamber .23 within the member 1G. Thisair chamber 23, for an important reason, is connected to the atmospherethrough radial Ventilating holes 24.

A live steam chamber is formed in the member 11 immediately below thelower and larger diaphragm 14; and this chamber 25 is, in practice,connected to the cylinder steam passage of the engine, or other source`of variable pressure, through a live steam pipe 26.

An oil chamber 27 is formed in the base 5 immediately above the upperand smaller diaphragm 16; and this oil chamber 27 is connected to theinterior of the oil reservoir, through a check valve-equi ped oil intakeconduit formed within the Ibase member 5,

and, as shown, comprises an oil duct 28 (see Fig. 2), a check ballchamber29 (see Fins. 2 and. 4.) and an oil duct 30 with upwardlyextended tubel, (seeFig. 4). n the check ball chamber 29 is agravity-seated cheek ball or valve 32 that permits a iow of oil from theoil reservoir into the oil chamber 27 but checks or prevents a reverseflow. 'lhis check ball therefore acts as the intake valve of the pumpmechanism.

Oil chai'nber 27' is adapted to be connected to the steam supply pipe ofthe engine or other part or device to receive the lubricant through a`check valve-cquipped oil delivery pipe coupling 39 may be assumed to beconnected by an extended pipe not shown, to the steam supply pipe orcylinder of an engine, the cylinder of which is connected to the livesteam pipe 26.

In a pump of" this character, the oil displacing movement. of thediaphragm may be and should be very slight, and, in practice, I

have found" that it may be as slight :is 2/100'0 of an inch, but forillustration we may assume it to be as much us 1/32 of an inch, 'inwhich case, when the stud 20 engages the hub 11", the diaphragm shouldbe flexed downward approximately 1/64th of an inch at the centralportions, and when the upper stud 19 strikes against the plug 34 thesaid diaphragm shouldbe thenflexed upward about 1/64th of an inch fromthe should be evenly divided'on opposite sidesr of the said respectiveplane, so as to .thereby obtain the absolute minimum amount ofshortening and lengthening of the radial lines ofthe dia hragm.

With the lubr'cator connected to an engine, as above described, therewill be constent live steam or steam chest pressure against the oil, andhence, against the upper or smaller diaphragm 16, and there will be apulsution of steam pressure against the lower or larger diaphragm 14 dueto the fact that the pressure in the cylinder to which steam pipe 26 isconnected, will vary between maximum live steam pressure and u.diminishing pressure down to the point of exhaust from'thecylinder, Inview of the relativelyv large area of diaphragm 14, the two diaphragmewill be pressed upward when said larger diaphragm is subjected tomaximum live steam or iiuctuating iiuid pressure. The twog: diaphragmewill be pressed downward by a spring bar 21 acting on post 18; and on.the other hand, the two diaphragms will be pressed downward by springbar 21 acting on post 18. when the saidlarger diaphragm 14 vis subjectedto `minimum live steam or fluctuating fluid pressure. The vibratory`movements thus imparted to the smaller diaphragm 16 produce an oil'pumpin action which is in proportion to the speer of the engine.

The oil must, of coluse be in contact with the upper or smallerdiaphragm, and hence, it is highly important that this upper diaphragmbe not heated to exbessive temperature by the steam which comes intocontact with the larger or lower diaphragm. In thearrangement-described, the upper dimphragm is kept cool and overheatinof the oil is prevented by the circulation o air betweenA the twodiaphragme, around the strut and within the chamber 23 and through theair ports 24. The position of the spring between the diaphragm isimportant because it is desirable to reduce toa minimum the volume ofoil contained in the oil chamber of the pump mechanism, and for thatreason, to reduce the said oil chamber to the smallest possible oilcontaining capacity.

lt is highly important also to avoid the use of corrugated metaldiaphragms, and this can be done only where the diaphragm fili.

.intimes movement is very slight, as in my arrangement above described.1 Corrugated metal diaphragme, under high pressure, such as that towhich thediaphragnis ot' this luhricator are subjected in practice,would collapse and would not be positive in their ai:- tion, and incollapsing, would suiier such fiber stress as soon to cause theirdisruption and failure. It is obvious that corrugated .instal diaphragmewould tend to straighten out under high pressure or load. provedarrangement, thev diaphragins have `such slight movement that they maynot only be made flat or without I corrugatioiis, lout may be :made ofquite heavy sheet metal,

-such as steel or a suitable alloy oiinetals l/Vhat I claim is:

la ln 'a force feed lubricaten oil pumping means including differentialdiai'ihragins, the larger of which is subject to pressure pulsations andthe snialler'of which acts as an oil displacing and transmittingelement, the said diephragms being; positively con neeted at theircentral portions for common vihratory movements. V

2. ln a fopoe feed lubricator, oil pumping means including diiferentialdiaphragme, the larger of which is subject to pressure pulsations andthe smaller of which acts as an oil displacing element, the saiddisaphragins being 'positively connected at their central portions forcommon. vibratory movements, said diaphragnis having,l a fioningmovement from the one side to the other ofthe planes of their respectiverims'. 17 ,f

3. In a force feed lubricator, oil puninns;

`means including differential diaphragme,

the larrer of which isv sub'ect to ,iiessure e: .l i, f

pulsations and the smaller ot Wliich""acts an oil displacingl element,the said tl1a- ,fl phragnis being positively connected, attheir centralportions :for connnoif lvihinter-y movements, the space betweii sa.iddia.phragms being connected to the atmosphere for the circulation of air.

4, ln a force feed lubricatior, oil pumping v means including'differential diaphragme, 'the larger of which is `subycet to pressurepulsations and the smaller of which acts as an oil displacing element,the said dia phragins vbeing. positively connected at their centralportions for common viliratory movements, an oil reservoir, an oil pumpchamber opening' against said small diaphragm, a conduit connecting saidoil reser voirV to said oil chamber, an oil deliveryconduit extendingfrom said oii chamber, and

check Valves in the said two conduits cooperating with said smalldiaphragm in the 'pumping action.

5. In a force feed lubricator, oil pumpingu means ineludinggdiiierential diaphragme, the larger of which is subject to pressurepulsations and the smaller oit which acts as I an oil displacingelement, the said dia-- the puinijiing action.

phragms being` positively connected at their `central portions iorcommon vibratory movements, an oil reservoir, an oil pump chamberopening; against said small dia phiagni, a, conduit connectingv said oilres crvoir to ,said oil chan'iben an oil delivery conduit extending fromsaid oil chamber, and cherlt valves in the said two conduitscooperatinnl uit-h said small diaph agin in the pumpingaction, thespacebetween said two diaphragius being open to the atmosphere for thecirculation ci ain lin a torce iced lubricatoi', oil pumping` meansincluding; differential diaphragme', the larger ot which is sub'icct topressure pulsations and the sinallei of which acts as an oil displacinpTeleinenn th said diaphragnis heine' positively connected at theircentral portions for common movementsrand aspring'cxerting a torce inone direction on the said two diaphragme.

7. .ln a force feed lubricator, the eo`1\1bi nation with a casing', or apair oit spaced difiereiitial diaphragme mounted in said casing;`

with {luidftigrht joints at their margins, the

(.liiiierential diaphragg'nis mounted in saidv casing with duidt-ightjoints at tlieir'nia.i gine, the larger of said diaphragins beingsubject to pressure pulsations and' the sinalleifot said diaphragmeacting as an oil displacinp;` element, and a strut positively spacing;and positively connecting the arial portions of. said two diaphragnis,.and stopping; means limiting the movements of said diapliragins `topositions approximately equi-A distant on opposite sides oi the planesof the respective peripheral portions.

9. In a. torce feed lubricator, the coinbiiiation with a casing, of apair oi' spaced dit I lferential diaphragme mounted in said easingl withfluid-tight joints at their margins,

the larger oi said diaphragme being subject to pressure pulsations andthe smaller oi.

said diaphragme.acting as an oil displacing element, and ay strutpositively spacingl and positively connecting the axial portions oitsaid two diapl Wiggins, and valve mechanism cooperating,r with saidsmall qdiaphragni in l0. ln a force feed luhricator, the conibinationwith a casing, oi" a pair ot spaced di'liierential diaphragme in theforni of smooth Hat metal disks and secured in said casing withHuid-tight joints at their peripheral portions, one of said diaphragmebeing; subject to pressure pulsations and the other actingu au oildisplacing element,

lilli 'lMi the said diaphragmeI being movable from one side to the otherof the planes'of the respective peripheral portions, and a. strutpositively connecting the axial portions of the said two diaphragms forcommon vibratory movements in both directions.

11. In a force feed lubricator, the combination with a casing, of a pairof spacedv diierential diaphragms in the forni of smooth flat Inet-a1 disks and secured in said vcasing with fluid-tight joints at. theirperipheral portions, one of said dlaphragms -lnovemcnts in bothdirections, and aspring located in the space between sald two d1a'.phragms acting on Said strut, and at its ends anchored to said casing.l

12. In a force feed lubricator, the combination with a casing, of a pairof spaced 2 diiie-rential diaphragms in the form of smooth flat metaldisks and secured vin said casing with fluid-tight joints at theirperipheral portions, one of said diaphragme being subject to pressurepulsations and the 8o other acting as an oil displacing element, thesaid diaphragms being movable from one side to the other of the planesof the respective peripheral portions, a strut positively connecting theaxial portions of the said two diaphragme for common vibratory movementsin both directionsfand the said space between said diaphragins beingopen to the atmosphere Jfor` the circulationof au'.

'In testimony whereof I aflix my signature in presence oftwo Witnesses.

WILLIAM J. SCHLACKS. Witnesses: A

M. B. CRONIN, C. J COPELAND.

